iOS: iPhone users looking to get a bit extra out of their daily jogs should definitely check out the Nike+ GPS app, which has been around for awhile but is available free for a limited time (though we don't know how limited). With it, you can track your pace, distance, and running route using the iPhone's GPS sensor, whether you're running an actual route or just around an indoor track. It can also give you voice feedback, keep a record of your best runs, and integrate with quite a few social networking features designed to keep you motivated. And, since it no longer requires that chip in your shoe, pretty much anyone can use it. Hit the link to check it out, and if you aren't a fan, be sure to check out the now-freeRunKeeper as an alternative. [iTunes App Store via App Shopper]